Large gas leaks in pipes or appliances may produce hissing noises, even if the appliance is turned off. Check pipes and appliances regularly, listening for any hissing noises. Air bubbles outside your home. Natural gas leaks can also occur in underground piping outside the home.
The First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Detector is a versatile, affordable device that monitors your household for carbon monoxide and natural explosive gases, such as methane and propane.
Exposure to a slow gas leak in your house or apartment may cause deadly symptoms including sickness, weakness, nausea, suffocation, and headaches. If you feel sick or abnormal, immediately call an ambulance to confirm if you have been exposed to gas poisoning.
What does a gas leak smell like in your house? Natural gas is odorless, but a substance known as mercaptan is added to your natural gas so that it gives off a pungent rotten egg smell. If you notice this odor in your home, it's possible you have a natural gas leak.
There Is the Potential for a Gas Explosion
Possibly the greatest danger of all that could result from a gas leak is an explosion. Even a small leak in a confined space that builds up over time can cause an explosion if there is a spark or some sort of ignition source.
While natural gas on its own is odourless, most providers purposely add a strong artificial smell to their natural gas to help you identify a leak. If you notice an odour of rotten eggs, sewage, or skunk in your home, you very well may have a leak. You can see signs of it.
3. Why does my house smell like gas, but there's no leak? A faint propane smell may not be cause for alarm. It's normal for a propane odor to linger when lighting a stove, or if the pilot light in a gas fireplace, hot water heater or other appliance goes out.
Gas leaks can occur in many places in the home. The most common areas are where pipes join together at the fittings, such as flex lines, tees, regulators and valves. These should be checked regularly. Also, these leaks can come from black iron piping corrosion that is not appropriately protected.
Signs of a Gas Leak
Foul odors like sulfur or rotten eggs. Hissing or whistling sound near a gas line. White or dust cloud near a gas line. Bubbles in puddles in the yard.
Gas leaks are subtle in smell but very obvious in bills. They can even go on for months undetected. But if there's a significant amount of gas escaping from your system, it can cause a spike in your gas bill.
If you smell gas inside your home or business:
Instruct others to leave and evacuate the premises immediately. Close the door behind you. Once outside and away from the building, call 911 immediately.
Most leaks occur at utility pipelines, but leaks occasionally happen in residential areas, including in-home leaks. The best thing you can do to keep your home safe from in-home leaks is to maintain your gas-powered appliances well and call for repairs right away.
The most obvious sign of a gas leak is a stinky smell. Gases used in homes for appliances and heating are odorless, so manufacturers add ethyl mercaptan because its potent “rotten egg” smell is easily noticeable. People sometimes say gas smells like sulfur or cooked cabbage.
"Anything that could cause a spark, even static electricity, could ignite an explosion in a gas leak. That could be a landline, light switch, candles, matches or other appliances. Also don't turn on the hot water if you have a gas hot water heater.
Natural gas leaks are rare but can occur in a variety of places, so it is important to be aware of the signs.
If you suspect a gas leak and have any of the above symptoms, please go outside into fresh air immediately and call the appropriate gas emergency helpline.
Rotten Egg Odors
For safety purposes, utility companies use an additive called mercaptan that gives colorless and odorless gases a smell that is hard to miss. Most people describe this smell as something like rotten eggs, sewage, or sulfur.
Natural gas is odorless, so a leak would be impossible to detect. Mercaptan, a harmless chemical that smells like sulfur or rotten eggs, helps you identify a gas leak. Even if you don't know what a gas leak smells like, the smell of rotten eggs will alert you to look for other problems in your home.
Calling the National Gas Emergency number to report a gas leak is free. An emergency gas engineer will be sent, free of charge, to 'make safe' your property. They won't repair appliances or pipework, though, that's something you'll need to arrange and pay for yourself.
Gas Meters:
The meter outside you houses a regulator on it which helps control the flow of gas into your home or business. There are times it will normally bleed-off or "burp" small amounts of gas to keep the pressure from building too high in your home. This is normal. So if you are near a meter you might smell it.
An olfactory hallucination (phantosmia) makes you detect smells that aren't really there in your environment. The odors you notice in phantosmia are different from person to person and may be foul or pleasant. You may notice the smells in one or both nostrils.
Natural Gas Inhalation Signs and Symptoms
Inhaling leaked gas in an indoor space, such as your home can result in a lack of oxygen in the air and lead to hypoxia. That can, in turn, lead to severe headaches, fatigue, decreased vision, short breaths, and even loss of consciousness.